Which of the following is the correct order with respect to the property indicated against it ?
(1) B > S > P > F (Ionization energy)
(2) \(K_2O > Na_2O >MgO > Al_2O_3\) (Basic nature)
(3) K > Na > Al > Mg (Metallic character)
(4) Cl > F > S > P (EA)

Choose the correct option:
1. 1, 2, 3 are correct
2. 2 and 4 are correct
3. 1, 2, 4 are correct
4. 1 and 3 are correct
Subtopic:  Electron Affinity (EA) | Nature of Compound |
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Level 1: 80%+
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Given below are two statements:
Statement-I : The correct order for radius is Al > Mg > Mg2+ > Al3+
Statement-II : Atomic size always depends on electronegativity.

1. Both statements I and II are correct
2. Both statements I and II are incorrect
3. Statement I is correct and Statement II is incorrect
4. Statement I is incorrect and statement II is correct
Subtopic:  Electronegativity |
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Level 3: 35%-60%
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What is the correct order of 2nd ionisation energy among the following?
1. O < C < N < F
2. C < N < O < F
3. C < N < F < O
4. C < O < N < F
Subtopic:  Ionization Energy (IE) |
 74%
Level 2: 60%+
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Given below are two statements:
Statement-I: The correct order of ionization energy is F > N > O > C
Statement-II: The correct order of electron gain enthalpy (magnitude only) for group 16 elements is S > Se > Te > O

1. Statement-I is correct and Statement-II is incorrect.
2. Statement-I and Statement II both are correct.
3. Statement-I is incorrect while Statement-II is correct.
4. Both Statements are incorrect.
Subtopic:  Ionization Energy (IE) | Electron Affinity (EA) |
 91%
Level 1: 80%+
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Given below are two statements:
Statement-I: First ionization energy of Cr is lower than that of Mn.
Statement-II: \(2^{nd}\) and \(3^{rd}\) ionization energy of Cr is higher than \(2^{nd}\) and \(3^{rd}\) ionization energy of Mn.

1. Statement I is correct and statement II is incorrect
2. Both statements I and II are correct
3. Statement I is incorrect and statement II is correct
4. Both statements I and II are incorrect
Subtopic:  Ionization Energy (IE) |
 54%
Level 3: 35%-60%
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Four elements from second period Boron to Oxygen can have following \(IE_1\) values (in kJ \(mol^{–1}):\)
1086.5, 800.6, 1313.9, 1402.3 
The value of \(IE_1\) for "Nitrogen" is:
1. 1086.5
2. 800.6
3. 1402.3
4. 1313.9
Subtopic:  Ionization Energy (IE) |
 86%
Level 1: 80%+
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Given below are two statements:
Statement-I : Size of \(O^{2–}\) ion is smaller than \(F^– \) ion.
Statement-II : Second ionization energy of Na is greater than second ionization energy of Mg.

1. Both statements are correct.
2. Both statements are incorrect.
3. Statement I is correct while Statement II is incorrect.
4. Statement I is incorrect while statement II is correct.
Subtopic:  Ionization Energy (IE) | Atomic Size |
 81%
Level 1: 80%+
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Electronegativity difference between a group 15 element and P is less than electronegativity difference between another group 15 element and P. Those group 15 elements respectively are :
1. Bi, N
2. Sb, As
3. Sb, Bi
4. N, As
Subtopic:  Electronegativity |
Level 3: 35%-60%
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The correct order of ionization energy of Cl, S, P, Al, and Si is :
1. Cl > P > S > Si > Al
2. Cl < P < S < Si < Al
3. P > Cl > S > Si > Al
4. S > P > Cl > Si >AI
Subtopic:  Ionization Energy (IE) |
 89%
Level 1: 80%+
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The type of oxide formed by the element among Li, Na, Be, Mg, B and Al that has the least atomic radius is :
1. \(\mathrm{A}_2 \mathrm{O}_3\)
2. \(\mathrm{AO}_2\)
3. AO
4. \(\mathrm{A}_2 \mathrm{O}\)
Subtopic:  Atomic Size |
 65%
Level 2: 60%+
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